#include "../logs/bitlog.h"
#include <chrono>

void bench(const std::string &logger_name, size_t thr_count, size_t msg_count, size_t msg_len)
{
    // 1. 获取日志器
    bitlog::Logger::ptr logger = bitlog::getLogger(logger_name);
    if (logger.get() == nullptr)
        return;
    std::cout << "测试日志: " << msg_count << "条, 总大小: " << msg_count * msg_len / 1024 << "KB\n";

    // 2. 组织指定长度的日志消息
    std::string msg(msg_len - 1, 'A'); // 少一个字节，是为了给末尾到时候添加换行

    // 3. 创建指定数量的线程
    std::vector<std::thread> threads;
    std::vector<double> cost_arry(thr_count);
    size_t msg_per_thr = msg_count / thr_count;     // 总日志数量/线程数量 就是每个线程要输出的日志数量
    for (int i = 0; i < thr_count; i++)
    {
        // emplace_back是构造并插入
        threads.emplace_back([&, i](){
            // 4. 线程函数内部开始计时
            auto start = std::chrono::high_resolution_clock::now();
            // 5. 开始循环写日志
            for(int j = 0; j < msg_per_thr; j++)
            {
                logger->fatal("%s", msg.c_str());
            }
            // 6. 线程函数内部结束计时
            auto end = std::chrono::high_resolution_clock::now();
            std::chrono::duration<double> cost = end - start;
            cost_arry[i] = cost.count();
            std::cout << "\t线程" << i << ": " << "\t输出数量: " << msg_per_thr << ", 耗时: " << cost.count() << "s" <<std::endl; 
        });
    }

    for(int i = 0; i < thr_count; i++)
        threads[i].join();
    
    // 7. 计算总耗时: 在多线程中，每个线程都会耗费时间，但是线程是并发处理的，因此耗时最高的那个就是总时间
    double max_cost = cost_arry[0];
    for(int i = 0; i < thr_count; i++)
        max_cost = max_cost < cost_arry[i] ? cost_arry[i] : max_cost;
    size_t msg_per_sec = msg_count / max_cost;  //每秒种所输出的数量
    size_t size_per_sec = (msg_count * msg_len) / (max_cost * 1024); //每秒种所输出的大小 kb

    // 8. 进行输出打印
    std::cout << "\t总耗时: " << max_cost << "s\n";
    std::cout << "\t每秒输出日志数量: " << msg_per_sec << "条\n";
    std::cout << "\t每秒输出日志大小: " << size_per_sec << "KB\n";
}

void sync_bench()
{
    std::unique_ptr<bitlog::LoggerBuilder> builder(new bitlog::GlobalLoggerBuilder());
    builder->buildLoggerName("sync_logger");
    builder->buildFormatter("%m%n");
    builder->buildLoggerType(bitlog::LoggerType::LOGGER_SYNC);
    builder->buildSink<bitlog::FileSink>("./logfile/sync.log");
    builder->build();
    bench("sync_logger", 3, 2000000, 100);  
}

void async_bench()
{
    std::unique_ptr<bitlog::LoggerBuilder> builder(new bitlog::GlobalLoggerBuilder());
    builder->buildLoggerName("async_logger");
    builder->buildFormatter("%m%n");
    builder->buildLoggerType(bitlog::LoggerType::LOGGER_ASYNC);
    builder->buildEnableUnSafeAsync();  //开启非安全模式---主要是为了将实际落地时间排除在外
    builder->buildSink<bitlog::FileSink>("./logfile/async.log");
    builder->build();
    bench("async_logger", 3, 2000000, 100);  
}

int main()
{
    sync_bench();

    return 0;
}
